FGB

FGB may refer to:


 * Fibrinogen beta chain, encoded by the FGB gene
 * First Guaranty Bank, an American bank
 * First Gulf Bank, an Emirati bank
 * Franco-German Brigade, a unit of the Eurocorps
 * Führer Grenadier Brigade, a unit of the Germany Army active during World War II
 * Functional Cargo Block (Russian: функционально-грузовой блок, Funktsionalno-gruzovoy blok), a spacecraft and International Space Station component